Also note, Peripheral Device does not inherently equal Peripheral Node.
Peripheral Devices, discussed in SR4A, pg 221, a peripheral device is a device that is not capable of functioning as a commlink, but has Matrix access. All Peripheral Nodes are; therefore, Peripheral Devices. The defining features of a Peripheral Node that "don't require the computing, processing, and networking capabilities of standard nodes". Anyone want to claim that running a Pilot program falls under that definition?
Additionally, Peripheral Nodes can only handle a single persona, and are not intended for multiple users. A vehicle/drone clearly doesn't fit this definition, either, as one would like to think the police could access a legally owned vehicle while it is being driven (meaning two users), a drone should be able to receive subscriptions from a security node AND the on-site rigger (multiple users), and a million other scenarios that clearly do not meet the Peripheral Node definition.
Therefore, not all Peripheral Nodes are Peripheral Devices.
Since nothing in the rules ties PN's to PD's, or vice versa, other than the word "peripheral", you are free to agree or disagree with me all day long. But, if we were to consider all non-commlinks/nexi to be PN's, I would simply disgard the PN rules in their entirety as being a whole-sale terrible idea. Gaining unlimited control over a main battle tank by simply beating its firewall (5, by the way)? No, not in my games.